On Mon, Jun 18, 2012 at 2:48 PM, Tasslehoff Kjappfot <tasskjapp@xxxxxxxxx> wrote: > The support for using a timer to wake from suspend was removed in: > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=98e182a26bbbf5575457622337684ef61493e864 > > I found an alternative patch > (http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg47836.html) that > claimed to keep it working using GPTIMER1 instead, but I haven't been able > to make it work (likely because the timer code has changed a good deal since > the patch was posted). > > Anyone got > a) a patch that enables this feature on newer kernels, or > b) an idea how the patch above can be made to work? > I had one working against 3.4. may be you can try this out and see it helps. Regards Santosh --- arch/arm/mach-omap2/pm-debug.c | 5 +++++ arch/arm/mach-omap2/timer.c | 12 ++++++++++++ 2 files changed, 17 insertions(+) diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c index 814bcd9..8f59a70 100644 --- a/arch/arm/mach-omap2/pm-debug.c +++ b/arch/arm/mach-omap2/pm-debug.c @@ -39,6 +39,7 @@ #include "pm.h" u32 enable_off_mode; +u32 wakeup_timer_seconds = 0; #ifdef CONFIG_DEBUG_FS #include <linux/debugfs.h> @@ -276,6 +277,10 @@ static int __init pm_dbg_init(void) (void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d, &enable_off_mode, &pm_dbg_option_fops); + + (void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUSR, d, + &wakeup_timer_seconds, &pm_dbg_option_fops); + pm_dbg_init_done = 1; return 0; diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index b28ea5e..31a0628 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -82,6 +82,9 @@ #define MAX_GPTIMER_ID 12 static u32 sys_timer_reserved; +#ifdef CONFIG_PM_DEBUG +extern u32 wakeup_timer_seconds; +#endif /* Clockevent code */ @@ -138,6 +141,15 @@ static void omap2_gp_timer_set_mode(enum clock_event_mode mode, break; case CLOCK_EVT_MODE_UNUSED: case CLOCK_EVT_MODE_SHUTDOWN: +#ifdef CONFIG_PM_DEBUG + if (wakeup_timer_seconds) { + __omap_dm_timer_write(&clkev, OMAP_TIMER_LOAD_REG, + 0xffffffff - (clkev.rate * wakeup_timer_seconds), 1); + __omap_dm_timer_load_start(&clkev, OMAP_TIMER_CTRL_ST, + 0xffffffff - (clkev.rate * wakeup_timer_seconds), 1); + } +#endif + break; case CLOCK_EVT_MODE_RESUME: break; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
